Climate Overview
The climate in Knysna N.W. is temperate. The average annual temperature is 17°C and approximately 512mm of precipitation falls per year. September is the wettest month, receiving around 71mm of rainfall. Knysna N.W. is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: February, January, December. The coldest months are August, July, June, when temperatures can drop to 10°C.
Temperature
Knysna N.W. sees moderate temperature variation throughout the year, ranging from 10°C to 24°C. February is the warmest month, though highs remain moderate at 24°C with a mean of 20°C. August is the coolest month, with minimum temperatures around 10°C and an average of 13°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between November and December, with a 2°C shift in average temperatures.
Precipitation
Knysna N.W. is a relatively dry area, receiving approximately 512mm of precipitation annually, which averages out to around 43mm per month. The wettest month is September, averaging 71mm of rainfall. January and November also tend to see above-average precipitation. The driest month is May, with just 27mm. That's 44mm less than September, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Knysna N.W. is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
3 days until Winter
It is currently autumn in Knysna N.W., which began on March 20, 2026. Knysna N.W. is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in February at around 24°C, while the coldest stretch bottoms out in August near 10°C. Winter is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 12 to 20°C. Precipitation is moderate at around 165mm for the season, averaging 55mm per month. Winds are generally light, averaging 4km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 16 to 24°C. Rainfall is relatively light, with around 131mm over the season and a monthly average of 44mm. Winds are generally light, averaging 4km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 13 to 22°C. Rainfall is relatively light, with around 96mm over the season and a monthly average of 32mm. Winds are generally light, averaging 3km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 10 to 18°C. Rainfall is relatively light, with around 120mm over the season and a monthly average of 40mm. Winds are generally light, averaging 4km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Knysna N.W. is during January, February, March, April, May, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 40mm per month. By contrast, August can be quite cold with temperatures dropping to 10°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Knysna N.W. based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
